Global Patent Index - EP 0084247 A3

EP 0084247 A3 19840606 - OPERATION MODE SETTING CIRCUITRY FOR MICROPROCESSOR

Title (en)

OPERATION MODE SETTING CIRCUITRY FOR MICROPROCESSOR

Publication

EP 0084247 A3 19840606 (EN)

Application

EP 82306835 A 19821221

Priority

JP 21371081 A 19811229

Abstract (en)

[origin: EP0084247A2] Operation mode setting circuitry, for a microprocessor operable in a plurality of operation modes, has a single input pin (2) through which an analog voltages the level of which serves for designating one of the operation modes, is applied to an analog-to-digital converter circuit (6) which is built into the microprocessor. The output digital signal from the analog-to-digital converter circuit (6) is decoded by a decoder (16), and the microprocessor is set at the designated operation mode in response to the decoded output signal.

IPC 1-7

G06F 1/00; G06F 3/05

IPC 8 full level

G06F 3/023 (2006.01); G01R 31/317 (2006.01); G06F 1/00 (2006.01); G06F 1/24 (2006.01); G06F 3/05 (2006.01); G06F 9/30 (2006.01); G06F 15/78 (2006.01); H03M 11/14 (2006.01)

CPC (source: EP US)

G01R 31/31701 (2013.01 - EP US); G06F 1/00 (2013.01 - EP US); G06F 1/24 (2013.01 - EP US); G06F 3/05 (2013.01 - EP US)

Citation (search report)

  • [Y] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 23, no. 7A, December 1980, pages 2934-2936, New York US; J.P. DAHL et al.: "OP code reconfiguration of keyboard operations"
  • [Y] TOUTE L'ELECTRONIQUE, no. 456, August-September 1980, pages 53-55, Paris, FR; C. VERBEEK: "Module d'acquisition de données réalisé avec un registre à approximations successives"
  • [A] IBM TECHNICAL DISCLOSURE BULLETIN, vol. 23, no. 8, January 1981, pages 3613-3614, New York, US; J.E. ROHEN: "Multi-code scanner"
  • [A] ELECTRONICS, vol. 52, no. 20, September 27, 1979, pages 38-39, New York, US; WILLIAM F. ARNOLD: "Three-level addressing compresses bits to overcome package pin limitations"
  • [A] ELECTRONIC DESIGN, vol. 29, no. 7, March 31, 1981, pages 161-168, Waseca, MN, Denville, NJ, US; H. GEE et al.: "Signal processor 'digitizes' analog design problems"

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0084247 A2 19830727; EP 0084247 A3 19840606; EP 0084247 B1 19870304; DE 3275594 D1 19870409; JP S58115547 A 19830709; US 4604692 A 19860805

DOCDB simple family (application)

EP 82306835 A 19821221; DE 3275594 T 19821221; JP 21371081 A 19811229; US 45425882 A 19821229